Islamic State (ISIS) Jihadists have burned 19 women alive in iron cages during a mass public execution after the girls refused to become sex slaves.

The terrified Yazidi Kurdish women were herded into the cages before being set on fire in a city square in the ISIS-stronghold of Mosul in Iraq.

Kurdish news agency ARA was told the women were sentenced to death after defying orders of ISIS commanders to be the sex slaves of jihadi fighters.

In other terms, they were brutally killed for refusing to have sex with IS militants.

Up to 500 Yazidi women and girls were kidnapped and sexually abused by militants in August 2014 – with many driven to suicide by ISIS' savage campaign of sexual violence.

As revealed by foreign media, more than 500 Yazidi women and young girls were abducted by ISIS fighters when they stormed the Sinjar region, also in northern Iraq, in August 2014 and slaughtered more than 5,000 of its men inlast year.